Annular Cutter Shank Compatibility: Weldon, Bayonet and Adapters

Do not collapse every 3/4-inch label

Hougen calls the 12000-Series interface a 3/4-inch double-flat shank. Milwaukee calls cutter 49-59-0750 a 3/4-inch Weldon shank and says it requires the correct arbor. FEIN calls product 63127744010 a 3/4-inch straight shank. Use the exact source label and part number; the shared nominal diameter does not prove interchangeability.

Hougen RotaLoc Plus is different again: its current page specifies a 5/8-inch bayonet twist-lock for the HMD130 and HMD150. If a used drill has been modified, identify the installed holder and every adapter before selecting tooling.

Match the pilot from the cutter table

The pilot is part of the exact cutter system, not a generic extra. Hougen’s 12000-Series table changes pilot part numbers by cutting depth and diameter group: for example, 1-inch-depth cutters use 10531 in smaller sizes and 10527 in larger sizes, while 2-inch-depth groups use 10532 or 10528.

FEIN names centering pin 63134998310 for its 35 mm HM ULTRA example. Hougen names pilot 17810 for RotaLoc Plus on HMD130 and HMD150. Milwaukee says one pin size serves its 1-inch-depth cutter family but does not give the pin part number on the referenced page, so confirm it from the matching arbor or current package record.

Read adapter direction literally

Hougen adapter 17680 is documented in one direction: it lets RotaLoc Plus cutters run in drills that accept a 3/4-inch shank. That does not establish the reverse, authorize another bayonet family or approve a cutter the drill cannot accept by diameter, depth or speed.

Measure the full assembly with the proposed cutter, pin and adapter. Confirm that required coolant delivery, clearance, travel and ejection still work. An adapter that solves retention does not automatically solve the rest of the cutter system.

• Machine model and installed holder identified.
• Exact cutter family, diameter and depth confirmed.
• Matching pin and any approved adapter listed.
• Clearance and coolant requirements checked.

Build a repeatable shopping record

Keep a short tooling record with machine number, holder number, cutter number and pin number. Add the approved source document and the intended material. This makes repeat purchases easier and helps someone else avoid buying the wrong family when replacing a worn cutter.

If a supplier cannot confirm a combination, leave compatibility unknown. A recommendation tool should filter that item out of a definite-match result until evidence is available. The correct outcome may be a manufacturer inquiry rather than another purchase.